Laotian Civil War

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Laotian Civil War
Part of the Second Indochina War

Cuban poster: "Forgotten war" showing clash of traditional Laotian weapons with U.S. bombers
Date 1962-1975
Location Kingdom of Laos
Result Communist victory and the establishment of the Lao People's Democratic Republic.
Combatants
Kingdom of Laos,
United States,
Thailand,
Republic of Vietnam
Pathet Lao
Democratic Republic of Vietnam
This article is part of
the History of Laos series

Early history of Laos
Lan Xang (C.E. 1353 - C.E. 1707)
Dark ages of Laos (1707 - 1893)
Luang Phrabang, Viang Chan, Champasak
French Laos (1893 - 1953)
Post-Independence Laos (1953-1975)
Pathet Lao
North Vietnamese Invasion of 1958
Laotian Civil War (1962-1975)
Communist Lao People's Democratic Republic (1975-1990s)
Modern Laos (1990s-present)
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The Laotian Civil War (1962-1975) was an internal fight between the Communist Pathet Lao and the Royal Laotian Government. The fighting in Laos included significant participation by North Vietnamese, American, and South Vietnamese military forces -- fighting directly and through irregular proxies for control over the Laotian Panhandle, which the North Vietnamese had occupied to use as a supply corridor and staging area for offensives into the South. The Pathet Lao emerged victorious in 1975, along with the general Communist victory in Indochina that year.


Contents

After the Geneva Conference established Laotian neutrality, North Vietnamese forces continued to operate in southeastern Laos. North Vietnam established the Ho Chi Minh trail on Laotian territory and supported an indigenous communist rebellion, the Pathet Lao, to help. The Ho Chi Minh trail was designed for North Vietnamese troops to infiltrate the Republic of Vietnam and to aid the National Liberation Front.

To disrupt these operations without direct military involvement, the U.S. Central Intelligence Agency (CIA) responded by training a force of some thirty thousand Laotians, mostly local Hmong tribesmen along with the Mien and Khmer, led by General Vang Pao, a Hmong military leader. This army, supported by the CIA proprietary airline Air America, Thailand and the Royal Lao Air Force, fought the People's Army of Vietnam (PAVN), the National Liberation Front (NLF), and their Pathet Lao allies to a standstill, greatly aiding U.S. interests in the war in Vietnam. There were repeated attempts from 1954 onward to get the North Vietnamese out of Laos, but regardless of any agreements or concessions, Hanoi had no intention of abandoning the country or its allies. Beyond immediate military necessity, the Democratic Republic of Vietnam (DRV) viewed Laos as a younger brother needing guidance. In 1968, North Vietnam launched a multi-division attack on the Royal Lao Army. The heavy weapons and scale of the PAVN attack could not be matched by the national army and it was effectively sidelined for several years.

Although the existence of the conflict in Laos was sometimes reported in the U.S., details were largely unavailable due to official government denials that the war even existed. The denials were seen as necessary considering that the U.S. had signed agreements specifying the neutrality of Laos. U.S. involvement was considered necessary because the DRV had effectively conquered a large part of the country and was equally obfuscating its role in Laos. Despite these denials, however, the Civil War was actually the largest U.S. covert operation prior to the Afghan-Soviet War, with areas of Laos controlled by North Vietnam subjected to years of intense American aerial bombardment, representing the heaviest U.S. bombing campaign since World War II.

Main article: Operation Barrel Roll
Barrel Roll operational area, 1964
Barrel Roll operational area, 1964

In May 1964, the 99U.S. Air Force began flying reconnaissance missions over the Laotian panhandle to obtain target information on men and materiel being moved into South Vietnam over the Ho Chi Minh Trail. By this time, the footpaths on the trail had been enlarged to truck roads, with smaller paths for bicycles and walking. The Trail had become the major artery for use by North Vietnam to infiltrate South Vietnam.

In the spring of 1964, Pathet Lao and PAVN troops drove Laotian forces from the Plain of Jars in northern Laos. On 9 June, President Lyndon B. Johnson ordered an F-100 strike against the enemy in retaliation for the shoot down of another U.S. aircraft. The Plain of Jars activities expanded by December 1964, were named Operation Barrel Roll and were under the control of the U.S. ambassador to Laos who approved all targets before they were attacked.

Barrel Roll/Steel Tiger operational area, 1965
Barrel Roll/Steel Tiger operational area, 1965

The U.S. began Operation Steel Tiger over the Laotian panhandle and the Vietnamese Demilitarized Zone (DMZ) on 3 April 1965 to locate and destroy enemy forces and materiel being moved southward at night into South Vietnam. However, since circumstances made it a highly complex matter in regard to the neutrality of Laos, target approval had to come from Washington. Additionally, the U.S. ambassadors in South Vietnam, Laos, and Thailand were involved in controlling these U.S. air operations

Late in 1965 the communists greatly increased their infiltration along the Ho Chi Minh Trail. It was decided to concentrate airpower upon a small segment of the Trail closest to South Vietnam and used most extensively by the enemy. As a result, Operation Tiger Hound was initiated in December 1965, utilizing aircraft from the Air Force, the U.S. Navy, and U.S. Marines, the Vietnamese Air Force, and the Royal Laotian Air Force. On 11 December, B-52 heavy bombers were called in to this tactical operation, in their first use over Laos.

Steel Tiger operations continued down the length of the panhandle in 1966, with special emphasis upon the Tiger Hound area. Since most of the communist truck traffic was at night, the Air Force developed and began using special equipment to detect the nighttime traffic.

July - Royal Lao Government (RLG) forces seize Nam Bac. Three Infantry Regiments, one independent infantry battalion, and one artillery battalion took Nam Bac and established a defensive line north of Luang Prabang.[1]

On the Plain of Jars, the Pathet Lao advance gradually slowed due to the destruction of its supplies by airpower, and Laotian troops then counter-attacked. By August 1966, they had advanced to within 45 miles of the DRV border. North Vietnam then sent thousands of its regular troops into the battle and once again the Laotians were forced to retreat.

Barrel Roll/Steel Tiger/Tiger Hound operational areas
Barrel Roll/Steel Tiger/Tiger Hound operational areas

The Communists continued their slow advance across the Plain of Jars in 1967. Laotian victories were few and far between, and by the end of the year, the situation had become critical even with the air support which had been provided by the Royal Laotian Air Force, small as it was.

December - PL and PAVN launched an offensive. The 316th Infantry Division was dispatched to Laos to cooperate with the PL.[2]

U.S., Royal Laotian, and VNAF aircraft continued their attacks on traffic along the Ho Chi Minh Trail. During 1967, B-52s flew 1,718 sorties in this area, almost triple their 1966 record. The major targets were trucks which had to be hunted down and destroyed one-by-one. This seemed to be irrational thinking to many Americans flying these combat missions for these trucks could have been destroyed en masse before, during, or after their unloading from the freighters that had hauled them to North Vietnam if bombing of Haiphong had been permitted.

Ho Chi Minh Trail, 1967
Ho Chi Minh Trail, 1967

On 12 January the PL PAVN offensive was kicked off. The Nam Bac region, home of 10,000 people, was liberated.[3]

Throughout 1968, the communists slowly advanced across the northern part of Laos, defeating Laotian forces time and time again, and eventually the U.S base Lima Site 85 was overrun. This success was achieved despite U.S. military advice and assistance. In November, the U.S. launched an air campaign against the Ho Chi Minh Trail because North Vietnam was sending more troops and supplies than ever along this route to South Vietnam. This new operation, named Operation Commando Hunt, continued until 1972.

Communist Base Areas, southern Laos
Communist Base Areas, southern Laos

On 23 March 1969, the Laotian Army launched a large attack (Cu Kiet Campaign) against the communists in the Plain of Jars/Xieng Khoang areas, supported by its own air units and the U.S. Air Force. In June, the enemy launched an attack of its own and gained ground, but by August, Laotian forces attacked again and regained what had been lost. In all these operations, the U.S. Air Force flew hundreds of Barrel Roll missions, however, many were canceled because of poor weather.

Pathet Lao forces were supported by PAVN's 174th Vietnamese Volunteer Regiment. By September, the 174th had to fall back to regroup. In mid-September they launched a counterattack and recovered the Plain of Jars. Forces participating in the campaign included the 316th and 312th Infantry Divisions, the 866th Infantry Regiment, the 16th Artillery Regiment, one tank company, six sapper and engineer battalions, one Nghe Anh Province local force battalion, and ten PL battalions.

On 11 February, the offensive (Campaign 139) opened. By the 20th, control of the Plain of Jars was secure. RLG forces withdrew to Muong Xui. On 25 February the RLG abandoned Xieng Khoang city. Xam Thong fell on 18 March and Long Thieng was threatened. On 25 April the campaign ended. After the end of the campaign, the "316th Division, the 866th Regiment, and a number of specialty branch units were ordered to stay behind to work with our Lao friends."[4]

PAVN trucks on the Ho Chi Minh Trail
PAVN trucks on the Ho Chi Minh Trail

At the beginning of 1970, fresh troops from North Vietnam advanced through northern Laos. The Air Force called in B-52s and, on 17 February, they were used to bomb targets in northern Laos. The enemy advance was halted by Laotian reinforcements, and for the remainder of the year it was a "seesaw" military campaign.

1 May - elements of SVN PAVN units (28th and 24A regiments) join with "volunteers" and pathet Lao to seize Attopeu.[5]

Although communist movements down the Ho Chi Minh Trail grew during the year, the U.S. war effort was reduced because authorities in Washington, believing the U.S. objectives in SEA were being achieved, imposed budget limits. This reduced the number of combat missions the USAF could fly.

Main article: Operation Lam Son 719
Operation Lam Son 719
Operation Lam Son 719

Because of significant logistical stockpiling by PAVN in the Laotian Panhandle, South Vietnam launched Operation Lam Son 719, a military thrust on 8 February 1971. Its goals were to cross into Laos toward the city of Tchepone and cut the Ho Chi Minh Trail, hopefully thwarting a planned North Vietnamese offensive. Aerial support by the U.S., was massive since no American ground units could participate in the operation. On 25 February, PAVN launched a counterattack, and in the face of heavy opposition, the South Vietnamese force withdrew from Laos after losing approximately half of its men.

Combined offensive to take Plain of jars. On 18 December, PAVN and Pathet Lao forces launch counteroffensive (Campaign Z) to recover the Plain. Volunteer forces included the 312th and 316th Divisions, the 335th and 866th Infantry Regiments, and six artillery and tank battalions. Xam Thong falls and pushes toward Long Thieng.[6]

Lower Laos - the 968th Infantry Regiment and Pathet Lao forces reclaimed the Tha Teng and Lao Nam areas, and liberated the Bolovens Plateau.[7]

During the dry season 1971-72, PL/PAVN forces dug into defensive positions and fought for permanent control of the Plain of Jars. Units participating included the 316th Infantry Division, the 866th, 335th, and 88th Regiments, and nine specialty branch battalions under the command of Senior Colonel Le Linh. Seven PL battalions also participated.

On 21 May RLG forces attempted to seize the Plain. The battle lasted 170 days (until 15 November, 1972). The communists claimed to have killed 1,200 troops and captured 80.[8]

When PAVN launched the Nguyen Hue Offensive (known in the West as the Easter Offensive) into South Vietnam on 30 March, Massive U.S. air support was required inside South Vietnam and its air strikes in Laos dropped to their lowest point since 1965.

In northern Laos, the communists made additional gains during the year but failed to overwhelm government forces. In November, the Pathet Lao agreed to meet with Laotian Government representatives to discuss a cease-fire.

Main article: Paris Peace Accord

The US pulled out of Laos in 1973 as stipulated by the Paris Peace Accord. North Vietnam was not required to remove its forces under the terms of the treaty.

The national government was forced to accept the Pathet Lao into the government. In 1975, Vietnamese and Pathet Lao forces began attacking government strongholds. A deal was eventually brokered that gave power to the Pathet Lao to save the government from total destruction.

Once in power, the Pathet Lao economically cut its ties to all its neighbors (including China) with the exception of the DRV and signed a treaty of friendship with Hanoi. The treaty allowed the Vietnamese to station soldiers within Laos and to place advisors throughout the government and economy. For many years after, Laos was effectively ruled by Vietnam.


  1. ^ Victory in Vietnam, p. 213.
  2. ^ Victory in Vietnam, p. 213.
  3. ^ Victory in Vietnam, p. 214.
  4. ^ Victory in Vietnam, p. 255.
  5. ^ Victory in Vietnam, p. 257.
  6. ^ Victory in Vietnam, p. 288.
  7. ^ Victory in Vietnam, p. 288.
  8. ^ Victory in Vietnam, p. 302.

  • Military History Institute of Vietnam, Victory in Vietnam: The Official History of the People's Army of Vietnam, 1954-1975. Trans. by Merle Pribbenow. Lawrence KS: University of Kansas Press, 2002.
  • Nalty, Bernard C. War Against Trucks: Aerial Interdiction in Southern Laos, 1968-1973. Washington DC: Air Force Museums and History Program, 2005.
  • Van Staaveren, Jacob, Interdiction in Southern Laos, 1960-1968. Washington DC: Center of Air Force History, 1993.
  • Vongsavanh, Brig. Gen. Soutchay, RLG Military Operations and Activities in the Laotian Panhandle. Washington DC: U.S. Army Center of Military History, 1980.

  • Adams, Nina S. and Alfred W. McCoy, eds. Laos: War and Revolution. New York: Harper & Row, 1970.
  • Blaufarb, Douglas, The Counterinsurgency Era.
  • Champassak, Sisouk Na, Storm Over Laos. New York: Praeger, 1961.
  • Conboy, Kenneth with James Morrison, Shadow War: The CIA's Secret War in Laos. Boulder CO: Paladin Press, 1995.
  • Duiker, William J., The Communist Road to Power in Vietnam 2nd ed. Westview Press, 1996.
  • Issacs, Arnold, Gordon Hardy, MacAlister Brown, et al, Pawns of War: Cambodia and Laos. Boston: Boston Publishing Company, 1987.
  • Karnow, Stanley, Vietnam: A History. New York: Viking, 1983.
  • McGehee, Ralph W. Deadly Deceits: My 25 Years in the CIA. New York: Sheridan Square, 1983.
  • Robbins, Christopher, Air America. New York: Avon, 1985.
  • Robbins, Christopher, The Ravens: Pilots of the Secret War in Laos. Bangkok: Asia Books, 2000.
  • Warner, Roger, Shooting at the Moon: The Story of America's Clandestine War in Laos. South Royalton VE: Steerforth Press, 1996.

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